ldd: Add MATCH_MACHINE definition for Meta

[uclinux-h8/uClibc.git] / libm / e_scalb.c

diff --git a/libm/e_scalb.c b/libm/e_scalb.c
index 772d955..9e1a3f7 100644 (file)
--- a/libm/e_scalb.c
+++ b/libm/e_scalb.c
@@ -1,4 +1,3 @@
-/* @(#)e_scalb.c 5.1 93/09/24 */
 /*
  * ====================================================
  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
@@ -10,45 +9,20 @@
  * ====================================================
  */
 
-#if defined(LIBM_SCCS) && !defined(lint)
-static char rcsid[] = "$NetBSD: e_scalb.c,v 1.6 1995/05/10 20:46:09 jtc Exp $";
-#endif
-
 /*
- * __ieee754_scalb(x, fn) is provide for
- * passing various standard test suite. One
- * should use scalbn() instead.
+ * __ieee754_scalb(x, fn) is provided for
+ * passing various standard test suites.
+ * One should use scalbn() instead.
  */
 
 #include "math.h"
 #include "math_private.h"
+#include <errno.h>
 
-libm_hidden_proto(scalbn)
-libm_hidden_proto(finite)
-libm_hidden_proto(rint)
-libm_hidden_proto(__isnan)
-
-#ifdef _SCALB_INT
-#ifdef __STDC__
-       double attribute_hidden __ieee754_scalb(double x, int fn)
-#else
-       double attribute_hidden __ieee754_scalb(x,fn)
-       double x; int fn;
-#endif
-#else
-#ifdef __STDC__
-       double attribute_hidden __ieee754_scalb(double x, double fn)
-#else
-       double attribute_hidden __ieee754_scalb(x,fn)
-       double x, fn;
-#endif
-#endif
+double __ieee754_scalb(double x, double fn)
 {
-#ifdef _SCALB_INT
-       return scalbn(x,fn);
-#else
        if (isnan(x)||isnan(fn)) return x*fn;
-       if (!finite(fn)) {
+       if (!isfinite(fn)) {
            if(fn>0.0) return x*fn;
            else       return x/(-fn);
        }
@@ -56,5 +30,31 @@ libm_hidden_proto(__isnan)
        if ( fn > 65000.0) return scalbn(x, 65000);
        if (-fn > 65000.0) return scalbn(x,-65000);
        return scalbn(x,(int)fn);
-#endif
 }
+
+#if defined __UCLIBC_SUSV3_LEGACY__
+/*
+ * wrapper scalb(double x, double fn) is provided for
+ * passing various standard test suites.
+ * One should use scalbn() instead.
+ */
+#ifndef _IEEE_LIBM
+double scalb(double x, double fn)
+{
+       double z = __ieee754_scalb(x, fn);
+       if (_LIB_VERSION == _IEEE_)
+               return z;
+       if (!(isfinite(z) || isnan(z)) && isfinite(x))
+               return __kernel_standard(x, (double)fn, 32); /* scalb overflow */
+       if (z == 0.0 && z != x)
+               return __kernel_standard(x, (double)fn, 33); /* scalb underflow */
+       if (!isfinite(fn))
+               errno = ERANGE;
+       return z;
+}
+#else
+strong_alias(__ieee754_scalb, scalb)
+#endif
+libm_hidden_def(scalb)
+
+#endif /* UCLIBC_SUSV3_LEGACY */